Sewer cleanout apparatus



FIG. 1 is a front elevational view of a sewer cleanout apparatus showing my new design;

FIG. 2 is a right side elevational view thereof, the spring head is shown in broken lines for illustrative purposes only and forms no part of the claimed design;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a top, front and right side perspective view thereof. 

The ornamental design for sewer cleanout apparatus, as shown. 